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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Roku Saito# | .4612 | 2034 | |
| 2 | Juan Rodríguez# | .4430 | 2033 | |
| 3 | Juan Rodríguez# | .4187 | 2031 | |
| 4 | Jason Cooke# | .4174 | 2034 | |
| 5 | Roberto Medina# | .4173 | 2035 | |
| 6 | Juan Carlos Cruz# | .4121 | 2034 | |
| 7 | Severiano Thalmann# | .4077 | 2036 | |
| 8 | Jeff Bane# | .4051 | 2028 | |
| 9 | Pablo Díaz# | .4048 | 2029 | |
| 10 | Jeff Bane# | .4047 | 2030 | |
| 11 | Dale Younger# | .4020 | 2038 | |
| 12 | Juan Rodríguez# | .4000 | 2032 | |
| 13 | William Sánchez# | .3971 | 2034 | |
| 14 | José Valdéz# | .3966 | 2036 | |
| 15 | Raúl Flores | .3940 | 2031 | |
| 16 | Jack Christian# | .3925 | 2037 | |
| 17 | George Hobbs# | .3906 | 2035 | |
| 18 | Valentín Salazar# | .3806 | 2038 | |
| 19 | Eric Stover# | .3765 | 2037 | |
| 20 | Juan Moreno# | .3740 | 2034 | |
| 21 | Orlando Saldaña# | .3677 | 2036 | |
| 22 | Tomás Rivera# | .3666 | 2037 | |
| 23 | Dudley Collins# | .3662 | 2037 | |
| 24 | Jack Rigney# | .3645 | 2036 | |
| 25 | Chris Meyer# | .3644 | 2038 | |
| 26 | Bobby Murdock | .3581 | 2028 | |
| 27 | Juan Carlos Cruz# | .3552 | 2033 | |
| 28 | Vincent Lowe# | .3464 | 2035 | |
| 29 | Bill Smith# | .3450 | 2036 |
